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How to generate line number debug information using GCC

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I would like to improve the build speed of a large project. The opt build is compiled with -O2 -g. I noticed that without -g, compilation becomes faster, about 10-20%. The resulting binary has enough information to analyze crashes, except for the line numbers. Is there a way to include line number information but nothing else?

According to [http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html], line numbers are produced only at level 2 (i.e. -g2 or the default of -g) or above. But according to [http://gcc.gnu.org/wiki/DebugFission], line numbers are only a fraction of the debug information (1%). So for me it would be best to have -g0 or -g1 but with line numbers. Is this possible?

posted Jul 28, 2013 by Luv Kumar

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